Corrected Statistical Energy Analysis Model In A Non-Reverberant Acoustic Space

Putra, Azma and Wan Mohamad, Wan Mohd Farid and Al Munawir and Herawan, Safarudin (2021) Corrected Statistical Energy Analysis Model In A Non-Reverberant Acoustic Space. Sound and Vibration, 55 (3). pp. 203-219. ISSN 1541-0161

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Abstract

Statistical Energy Analysis (SEA) is a well-known method to analyze the flow of acoustic and vibration energy in a complex structure. This study investigates the application of the corrected SEA model in a non-reverberant acoustic space where the direct field component from the sound source dominates the total sound field rather than a diffuse field in a reverberant space which the classical SEA model assumption is based on. A corrected SEA model is proposed where the direct field component in the energy is removed and the power injected in the subsystem considers only the remaining power after the loss at first reflection. Measurement was conducted in a box divided into two rooms separated by a partition with an opening where the condition of reverberant and non-reverberant can conveniently be controlled. In the case of a non-reverberant space where acoustic material was installed inside the wall of the experimental box, the signals are corrected by eliminating the direct field component in the measured impulse response. Using the corrected SEA model, comparison of the coupling loss factor (CLF) and damping loss factor (DLF) with the theory shows good agreement

Item Type:	Article
Uncontrolled Keywords:	Statistical Energy Analysis (SEA), Non-Reverberant Space, Coupling Loss Factor (CLF), Damping Loss Factor (DLF), Room Acoustics
Divisions:	Faculty of Mechanical Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	20 Dec 2021 14:49
Last Modified:	20 Dec 2021 14:49
URI:	http://eprints.utem.edu.my/id/eprint/25369
Statistic Details:	View Download Statistic

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